Tag: 200-300

New protecting groups for the indole ring of tryptophan in peptide synthesis: 2,4,6-trimethoxybenzenesulfonyl and 4-methoxy-2,3,6-trimethylbenzenesulfonyl groups was written by Fukuda, Tsunehiko;Wakimasu, Mitsuhiro;Kobayashi, Shigeru;Fujino, Masahiko. And the article was included in Chemical & Pharmaceutical Bulletin in 1982.Application of 63624-28-2 This article mentions the following:

The title groups (Mtb and Mtr, resp.) and 2,4-RR¹C₆H₃SO₂ (R = H, R¹ = Me, MeO; R = R¹ = MeO) were introduced at the Nⁱⁿ of tryptophan, and their protective group properties were studied. Thus, Boc-Trp-OCH₂Ph (Boc = Me₃CO₂C) was treated with R²Cl (R² = Mtb, Mtr) to give Boc-Trp(R²)-OCH₂Ph, which was saponified to give Boc-Trp(R²)-OH. Mtb and Mtr were stable to CF₃CO₂H, but they can be removed by HF or MeSO₃H; these groups suppress decomposition and modification of the tryptophan residue during peptide synthesis. The Mtb and Mtr groups were used for the protection of the indole ring in the synthesis of pyro-Glu-Gln-Arg-Leu-Gly-Asn-Gln-Trp-Ala-Val-Gly-His-Leu-Met-NH₂ (bombesin) and LH-releasing hormone analog pyroGlu-His-Trp-Ser-Tyr-D-Leu-Leu-Arg-Pro-NHEt by solution methods and the preparation of H-Tyr-Gly-Gly-Phe-Leu-Arg-Arg-Ile-Arg-Pro-Lys-Leu-Lys-Trp-Asp-Asn-Gln-OH (dynorphin) by the solid-phase method. In the experiment, the researchers used many compounds, for example, 2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2Application of 63624-28-2).

2,4-Dimethoxybenzene-1-sulfonyl chloride (cas: 63624-28-2) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Application of 63624-28-2

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthetic Strategies towards Imidazopyridinones and 7-Azaoxindoles and their Evaluation as Antibacterial Agents was written by Blindheim, Fredrik Heen;Olsen, Cecilie Elisabeth;Krogh Soegaard, Caroline;Otterlei, Marit;Sundby, Eirik;Hoff, Baard Helge. And the article was included in European Journal of Organic Chemistry in 2021.Quality Control of (Chloromethanetriyl)tribenzene This article mentions the following:

Imidazopyridinones I (R = H, OMe) and 7-azaoxindole II are two classes of heterocyclic compounds with only limited previous use in organic and medicinal chem. Various synthetic methods and routes have been evaluated to identify safe and robust chem. to advanced imidazopyridinone I building blocks and inhibitor structures. Preparation of the 7-azaoxindoles II was challenged by instability of the core scaffold. Key to the successful isolation of the target structure was development of a mild Suzuki cross-coupling in non-aqueous media. The imidazopyridinones I were potent inhibitors of the E. coli thymidylate monophosphate kinase, while the 7-azaoxindole II showed low activity. The compounds were inactive in cell-based studies, indicating poor cell wall penetration. In the experiment, the researchers used many compounds, for example, (Chloromethanetriyl)tribenzene (cas: 76-83-5Quality Control of (Chloromethanetriyl)tribenzene).

(Chloromethanetriyl)tribenzene (cas: 76-83-5) belongs to organic chlorides. Organic chlorides can be used in production of: PVC, pesticides, chloromethane, teflon, insulators. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Quality Control of (Chloromethanetriyl)tribenzene

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Oxidation of triethylene glycol by N-chlorosaccharin in cetyltrimethylammonium bromide catalyzed system: a kinetics and mechanistic study was written by Sharma, Vandana;Sharma, K. V.;Bhagwat, V. W.. And the article was included in Physical Chemistry: An Indian Journal in 2008.Quality Control of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide This article mentions the following:

The kinetics and mechanistic study of cetyltrimethylammonium bromide catalyzed oxidation of triethylene glycol [2,2′-ethylene dioxybis(ethanol)] by N-chlorosaccharin in aqueous acetic acid medium in presence of perchloric acid were studied at 303-323K temperature range. The reaction has first order dependence on N-chlorosaccharin concentration The reaction rate follows first order kinetics with respect to [triethylene glycol] with excess concentration of other reactants. The micelle effect due to cetyltrimethylammonium bromide- a cationic surfactant was studied. The change in ionic strength shows negligible salt effect. The dielec. effect is pos. Addition of one of (saccharin) retards the reaction rate. Activation parameters are calculated from the Arrhenius plot. A suitable mechanism was proposed in consistence with the kinetic data. In the experiment, the researchers used many compounds, for example, 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (cas: 14070-51-0Quality Control of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide).

2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (cas: 14070-51-0) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Quality Control of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis, cytotoxic activities and molecular modeling studies of some 2-aminonaphtho[2,3-d][1,3]thiazole-4,9-dione derivatives was written by Yanik, Hulya;Ayan, Sumeyra;Akdemir, Atilla;Erdogan, Omer;Ustundag, Cem Bulent;Cevik;Yilmaz, Ozge Ozgur. And the article was included in Organic Communications in 2020.Computed Properties of C7H3Cl2NS This article mentions the following:

A series of 2-aminonaphtho[2,3-d][1,3]thiazole-4,9-dione derivatives I (R = 4-methylphenyl, 2,4-dichlorophenyl, cyclohexyl, etc.) was synthesized and their structures were verified with spectral anal. In vitro cytotoxic activities of the synthesized compounds I were evaluated by using MTT assay against MKN-45 (Human Gastric cancer), MDA-MB-231 (Human Breast cancer) and HeLa (Human Cervical cancer) cell lines. Among the synthesized compounds, I (R = 4-trifluoromethylphenyl) inhibited MDA-MB-cell proliferation with an IC₅₀ value of 0.276μM. Compound I (R = 4-fluorophenyl) inhibited HeLa and MKN-45 cell proliferation with IC₅₀ values of 0.336μM and 8.769μM, resp. Compound I (R = 4-methoxyphenyl) inhibited HELA cell proliferation with an IC₅₀ value of 0.269μM. Mol. docking results suggest that the ligands may bind to the hDNA TopoIIβ binding pocket and partially exert their effects. These results propose that 2-aminonaphtho[2,3-d]thiazole-4,9-dion core has important biol. effects and further explorations are worthwhile. In the experiment, the researchers used many compounds, for example, 2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1Computed Properties of C7H3Cl2NS).

2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Computed Properties of C7H3Cl2NS

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis and identification of novel berberine derivatives as potent inhibitors against TNF-α-induced NF-κB activation was written by Wang, Yan-Xiang;Liu, Lu;Zeng, Qing-Xuan;Fan, Tian-Yun;Jiang, Jian-Dong;Deng, Hong-Bin;Song, Dan-Qing. And the article was included in Molecules in 2017.Related Products of 777-44-6 This article mentions the following:

Twenty-three new berberine (BBR) analogs containing substituents on ring D, I [R¹ = OMe, NH₂, cyclopropanecarbonyloxy, (4-nitrophenyl)sulfonyloxy, etc., R² = OMe, (adamantan-1-yl)acetoxy, (adamantane-10-carbonyloxy)], were synthesized and evaluated for their activity for suppression of tumor necrosis factor (TNF)-α-induced nuclear factor (NF)-κB activation. Structure-activity relationship (SAR) anal. indicated that suitable tertiary/quaternary carbon substitutions at the 9-position or a rigid fragment at position 10 might be beneficial for enhancing their anti-inflammatory potency. Among them, compounds I [R¹ = (1-methylcyclohexane-1-carbonyl)oxy, 2-(bicyclo[2.2.1]heptan-2-yl)acetoxy, (2′-propylpentanoyl)oxy, (p-tert-butylbenzoyl)oxy, R² = OMe] exhibited satisfactory inhibitory potency against NF-κB activation, with an inhibitory rate of around 90% (5 μM), much better than BBR. A preliminary mechanism study revealed that all of them could inhibit TNF-α-induced NF-κB activation via impairing IκB kinase (IKK) phosphorylation as well as cytokines interleukin (IL)-6 and IL-8 induced by TNF-α. Therefore, the results provided powerful information on further structural modifications and development of BBR derivatives into a new class of anti-inflammatory candidates for the treatment of inflammatory diseases. In the experiment, the researchers used many compounds, for example, 3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6Related Products of 777-44-6).

3-(Trifluoromethyl)benzene-1-sulfonyl chloride (cas: 777-44-6) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Alkyl chlorides are versatile building blocks in organic chemistry. While alkyl bromides and iodides are more reactive, alkyl chlorides tend to be less expensive and more readily available.Related Products of 777-44-6

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Tailored nanofiltration membranes with enhanced permeability and antifouling performance towards leachate treatment was written by Pu, Liangtao;Xia, Qiancheng;Wang, Yanfeng;Bu, Yongguang;Zhang, Quanxing;Gao, Guandao. And the article was included in Journal of Membrane Science in 2022.Recommanded Product: 4422-95-1 This article mentions the following:

The leachate generated from the sanitary landfill or incineration poses serious environmental threats and it’s difficultly disposed due to its complexity containing high concentration of organic matters and inorganic salts etc. Membrane technol. stands out as a potential solution for leachate because of its beneficial advantages. Nanofiltration (NF) can reject organic compounds and sep. divalent ions from mixed salts, which alleviates fouling and increases separation efficiency and flux of reverse osmosis (RO) in the popular combined processes (MBR-NF/RO) applicable for leachates. However, NF is often subject to low water permeance and membrane fouling for traditional polyamide thin film composite (PA-TFC) membranes. This work develops a high-performance NF membrane by grafting bipyridinium derivative monomer (BBD), an alternative antibacterial by interfering with the bacterial metabolism and reproduction and a hydrophilic compound endowing membrane hydrophilicity, onto PA-TFC membranes through the esterification reaction toward the leachate treatment. Resultantly, the BBD-TFC membrane achieves a reasonably high pure water permeability of 31.6 ± 2.1 L m-2 h-1 bar-1, ∼ 4 times higher than that of the pristine polyamide membrane. Notably, the resultant membrane exhibits excellent antifouling and antibacterial properties in the treatment of the leachate benefiting from the more hydrophilic surface and neg. potential on BBD-TFC. Meanwhile, high rejection ratio of divalent ions and organic matter (R > 95%) was also attained companying with high separation efficiency of divalent/monovalent ions. The current work may provide an effective strategy to design high performance NF membranes for the leachate treatment or other wastewater treatment. In the experiment, the researchers used many compounds, for example, Trimesoylchloride (cas: 4422-95-1Recommanded Product: 4422-95-1).

Trimesoylchloride (cas: 4422-95-1) belongs to organic chlorides. Organochlorines are organic compounds having multiple chlorine atoms. They were the first synthetic pesticides that were used in agriculture. They are resistant to most microbial and chemical degradations. Aliphatic organochlorides are often alkylating agents as chlorine can act as a leaving group, which can result in cellular damage.Recommanded Product: 4422-95-1

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Synthesis of novel thiosemicarbazone derivatives as antidiabetic agents with enzyme kinetic studies and antioxidant activity was written by Tok, Fatih;Kucukal, Bahar;Baltas, Nimet;Tatar Yilmaz, Gizem;Kocyigit-Kaymakcioglu, Bedia. And the article was included in Phosphorus, Sulfur and Silicon and the Related Elements.Application In Synthesis of 2,4-Dichlorophenylisothiocyanate This article mentions the following:

Novel thiosemicarbazone derivatives I [R = H, 4-F, 2,6-Cl₂, etc.] were synthesized via condensation reactions between the corresponding thiosemicarbazides and 4-(methylsulfonyl)acetophenone. The chem. structures of all compounds were elucidated by IR, ¹H-NMR and ¹³C-NMR spectroscopy and mass spectrometry. Antioxidant studies of I were performed by using CUPRAC, FRAP, DPPH methods. I [R = H] (II) possessed good antioxidant activity with an SC₅₀ value of 15.70 μM which also is higher than standard drug ascorbic acid. All compounds were evaluated for their antidiabetic properties as α-glycosidase and α-amylase inhibitors. Compound II was found to be the most active compound against α-glucosidase and α-amylase with IC₅₀ values of 1.58 μM and 3.24 μM, resp. The enzyme kinetic studies demonstrated that II [R = H] had a competitive mode of binding. Furthermore, mol. docking studies had elucidated the binding mechanism at the mol. level by examining the mol. interactions between II and these enzymes. In the experiment, the researchers used many compounds, for example, 2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1Application In Synthesis of 2,4-Dichlorophenylisothiocyanate).

2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. The haloform reaction, using chlorine and sodium hydroxide, is also able to generate alkyl halides from methyl ketones, and related compounds. Chloroform was formerly produced thus.Application In Synthesis of 2,4-Dichlorophenylisothiocyanate

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Visible-light promoted intermolecular halofunctionalization of alkenes with N-halogen saccharins was written by Song, Lu;Luo, Sanzhong;Cheng, Jin-Pei. And the article was included in Organic Chemistry Frontiers in 2016.Application In Synthesis of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide This article mentions the following:

A simple and efficient visible-light promoted intermol. haloamination and haloetherification of alkenes using N-halosaccharin as the halogen and nitrogen/oxygen source (halo = Br, Cl) was reported. The reaction was applied to a very broad range of alkenes to generate haloamines and haloethers with high isolated yields. With DBU as the base, metal-free C-H amination of aryl olefins was achieved with good yields. In the experiment, the researchers used many compounds, for example, 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (cas: 14070-51-0Application In Synthesis of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide).

2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide (cas: 14070-51-0) belongs to organic chlorides. Chlorinated organic compounds are found in nearly every class of biomolecules and natural products including alkaloids, terpenes, amino acids, flavonoids, steroids, and fatty acids. Alkyl chlorides readily react with amines to give substituted amines. Alkyl chlorides are substituted by softer halides such as the iodide in the Finkelstein reaction.Application In Synthesis of 2-Chlorobenzo[d]isothiazol-3(2H)-one 1,1-dioxide

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Comparative antioxidant, anticancer and antimicrobial activities of essential oils from Semen Platycladi by different extraction methods was written by Zhu, Jing-Jing;Yang, Jing-Juan;Wu, Guo-Jie;Jiang, Jian-Guo. And the article was included in Industrial Crops and Products in 2020.Recommanded Product: 1-Chlorooctadecane This article mentions the following:

Semen Platycladi is a highly valued seed tonic from the Cupressaceae Platycladus orientalis (L.) Franco, which contains abundant essential oils exhibiting antioxidant, antimicrobial, sedative and hypnotic potency. The study was formulated to estimate the potential antioxidant, anticancer and antibacterial activities of its essential oils as well as its correlation with chem. constituents. The comparison of three isolation methods including steam distillation extraction, heating reflux extraction, and Soxhlet extraction of ethanol was carried out to isolate essential oils whose chem. composition were identified and evaluated by Gas Chromatog.-Mass Spectrometer. It turned out that the yield of essential oils obtained through heating reflux extraction and Soxhlet extraction was almost 40 % higher than those extracted by steam distillation extraction in nearly one-quarter of a time used by the steam distillation extraction A total of 76 compounds were identified, including ten alkanes, 14 alkenes, 13 alcs., one aldehyde ketone, three ethers, one acid, 17 esters, five aromatic compounds, and 12 others. The essential oils extracted by steam distillation extraction were proved to have the best antioxidant and antimicrobial activity although with the lowest yield. Scanning electron microscopic observation displayed that the of S. aureus revealed serious disruption of cell membranes resulting in the loss of cell viability. Therefore, it′s vital to adopt a proper method to obtain the target ingredients recommended as nutraceuticals and/or phytomedicines. In the experiment, the researchers used many compounds, for example, 1-Chlorooctadecane (cas: 3386-33-2Recommanded Product: 1-Chlorooctadecane).

1-Chlorooctadecane (cas: 3386-33-2) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Recommanded Product: 1-Chlorooctadecane

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Mild and Efficient Synthesis of 5-(2,2-difluoro-1-phenyl cyclopropyl)-N-substituted-1,3,4-oxadiazol-2-amines via Graphene Oxide as Catalyst under Ultrasonic Irradiation Conditions was written by Reddy, Sirigireddy Sudharsan;Reddy, Bijivemula N.;Reddy, Peddiahgari Vasu Govardhana;Reddy, Gajulapalli Vishwakshan;Sarma, Loka Subramanyam. And the article was included in ChemistrySelect in 2017.Product Details of 6590-96-1 This article mentions the following:

A series of novel 5-(2,2-difluoro-1-phenylcyclopropyl)-N-substituted-1,3,4-oxadiazol-2-amines were synthesized from the reaction of 2,2-difluoro-1-phenylcyclopropane carbohydrazide and various isothiocyanates in the presence of graphene oxide (GO) and 1,8-diazabicyclo [5.4.0]undec-7-ene (DBU) under conventional and ultrasonic irradiation conditions. It was found that the reaction was completed in a short period of time with good to excellent yields by virtue of attributes offered by GO catalyst. Further, the reaction underwent smoothly in ethanol and ionic liquids Noteworthy, GO can be recycled and reused for five cycles without considerable loss in activity. The oxidative activity and morphol. of GO catalyst was confirmed by transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Fourier transform IR spectroscopy (FT-IR) and cyclic voltammetry (CV) techniques. In the experiment, the researchers used many compounds, for example, 2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1Product Details of 6590-96-1).

2,4-Dichlorophenylisothiocyanate (cas: 6590-96-1) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Product Details of 6590-96-1

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics